NZLDD V1 Lake
The Lake polygons signify the known or inferred area inundated by landslide-dammed lakes. In many instances the lake no longer exists in the landscape and its extent was inferred based on geomorphic features such as sedimentary plains, wetlands, and deltas. If no obvious signs of a past lake exist for a particular case study, a lake was not mapped. Where the landslide-dammed lakes still exist today (typically for large, enduring dams), the current lake extent was taken from the LINZ topographic 1:50,000 scale mapping (LINZ, 2020a, 2020b). These are likely not the initial or maximum lake extents, particularly for old dams. The Lake was delineated using a variety of methods from manual mapping on 1 m resolution LiDAR to using the LINZ 1:50,000 scale map data. The quality of data (e.g., resolution, accuracy, etc.) therefore varies depending on the technique used (linked to the QualityRankings table). This feature class contains attributes that are specific to the landslide-dammed lake.
Simple
- Date (Creation)
- 2023-01-25
- Presentation form
- Digital map
- Other citation details
- R Morgenstern, A Wolter, SC Cox, B Lukovic, D Bain, A Sirohi, Z Bruce, K Jones, B Rosser, D Townsend, C Massey. 2023. The New Zealand Landslide Dam Database, v1.0.
- Purpose
- This database has been developed by GNS Science and comprises Version 1.0 of the New Zealand (NZ) Landslide Dam Database (NZLDD). This database contains recent, historic and prehistoric landslide dams in NZ, defined as significant, ephemeral or enduring blockages of a watercourse by a landslide. Version 1.0 contains many catalogued landslide dams, but is not a complete database of all landslide dams that have ever occurred in NZ. A full description of the database is published alongside these data (Morgenstern et al., 2023).
- Credit
- R Morgenstern, A Wolter, SC Cox, B Lukovic, D Bain, A Sirohi, Z Bruce, K Jones, B Rosser, D Townsend, C Massey.
- Status
- Completed
- Maintenance and update frequency
- Not planned
- Place
-
- New Zealand
- Theme
-
- multi-hazard
- natural dam
- hazard
- GIS
- database
- landslide
- dam
- Version 1.0
- landslide dam
- Keywords
-
- Downloadable Data
- Use limitation
- This information has been prepared by the Institute of Geological and Nuclear Sciences Limited (GNS Science). The information is derived from multiple data sources, including 3rd party, which are at various scales and resolutions. As there is always uncertainty associated with such data, GNS Science gives no warranties of any kind concerning its assessment and estimates, including accuracy, completeness, timelines or fitness for purpose and accepts no responsibility for any actions taken based on, or reliance placed on them by any person or organisation. GNS Science excludes to the full extent permitted by law any liability to any person or organisation for any loss, damage or expense, direct or indirect, and however caused, whether through negligence or otherwise, resulting from any person or organisation's use of, or reliance on this information.
- Spatial representation type
- Vector
- Denominator
- 10000
- Metadata language
- English
- Character set
- UTF8
- Topic category
-
- Geoscientific information
- Environment description
- Version 6.2 (Build 9200) ; Esri ArcGIS 10.8.1.14362
Vertical extent
- Minimum value
- 0
- Maximum value
- 0
N
S
E
W
- Reference system identifier
- EPSG / 2193 / 7.9.4(9.0.0)
- Topology level
- Geometry only
- Geometric object type
- Composite
- Geometric object count
- 824
- Distribution format
-
-
File Geodatabase Feature Class
()
-
File Geodatabase Feature Class
()
- File identifier
- 4052672B-D0C5-4753-B72C-17BA12FB7E03 XML
- Metadata language
- English
- Character set
- UTF8
- Parent identifier
- New Zealand Landslide Dam Database Version 1.0 (NZLDD V1) 400BD412-A1AD-4D42-907B-ED9619EF8F87
- Hierarchy level
- Dataset
- Hierarchy level name
- dataset
- Date stamp
- 2023-03-17T11:57:18
- Metadata standard name
- ISO 19139 Geographic Information - Metadata - Implementation Specification
- Metadata standard version
- 2007
Overviews
Spatial extent
N
S
E
W
Provided by
Associated resources
Not available